HNHacker News
TopNewBestAskShowJobs

mcbits

2,232 karma · joined April 25, 2016

submissionscomments
mcbits··on We're building a browser when it's supposed to be impossible
It depends on the types of bugs and inconsistencies that show up in practice. If a page (or worse, the whole browser) crashes, that's a problem. If a column of ads doesn't scale right and gets bumped down to become its own lonely row below the main content, that's kind of ugly but almost a feature.
mcbits··on Understanding the .NET ecosystem: The evolution of .NET into .NET 7
15 years of management experience. Oversaw the reduction of personnel expenditures by 90%. They'll do fine.
mcbits··on Who owns private home security footage, and who can get access to it?
Is there any sort of encryption scheme that would make it possible to generate a key on-demand to decrypt only the data that was encrypted within some arbitrary interval of time? The idea being if 100 terabytes of someone's private life history is seized, a judge could order the decryption of only the parts likely to contain material evidence.

The closest thing that comes to mind is to use a unique AES key for every chunk of 5 minutes or so, and then encrypt those keys with an asymmetric cipher with the private key secured off-site somewhere, which could selectively decrypt some of the AES keys. But that could be an inconveniently long list of keys for, say, 10 video feeds over several days.

mcbits··on Cool URIs Don't Change (1998)
It's definitely valid (e.g. "public fora"), but it could be considered archaic or formal.
mcbits··on ARM64 Linux Workstation
In 2019 I thought that by now I could buy a bunch of 8GB Raspberry Pi 4s (or equivalent) for $20 apiece, install them all over the house and car for various purposes, and occasionally use them as a cluster for video editing or whatever.

The pandemic and trade wars put a wrench in the gears of that plan, but I still think that would be way cooler than lugging around a 128GB laptop and using it for everything, a.k.a. single point of failure.

mcbits··on Jailbreak Chat: A collection of ChatGPT jailbreaks
The syllabus doesn't include those potentially taboo topics. The knowledge of chemistry leads to knowledge of those topics.

Sure, a teacher with zero knowledge of chemistry can follow a syllabus, read the textbook out loud, make sure everyone's multiple choice answers match the answer key, and try to teach chemistry to some first approximation of "teach". A primitive computer program can do that too.

What happens when a student asks a question that deviates slightly from the syllabus because they didn't quite grasp it the way it was explained? The teacher can't answer the question, but a "dumb GPT model" trained on the entirety of the Internet, including a ton of chemistry, including the syllabus, probably can.

But yes, if you pre-filter the training data to include only the words of the syllabus, the language model will be just as poor of a teacher as the human who did the same thing. Reminds me of my first "programming teacher", a math teacher who picked up GW-BASIC over the summer to teach the new programming class. He knew nothing.

We never even reached the contentious part of this discussion. This part should be obvious. You can't just filter out "bomb" because the student could explain in broad terms what they mean by the word and then ask for a more detailed description. You can't filter out "explosion" because the teacher might need to warn the students about the dangers of their Bunsen burner. You can't filter out all the possible chemical reactions that could lead to an explosion, because they can be inferred from the subject matter that it's supposed to be teaching.

The same goes for things like negative stereotypes, foul language, talking about "illegal or unethical" behaviors (especially as laws and ethical norms can change after training, or differ between usage contexts). Pre-filtering is just a nonstarter for any model that's intended to behave as an intelligent being with worldly knowledge. And if we drop those requirements, then we're not even talking about the same technology anymore.

mcbits··on AI: Practical Advice for the Worried
Maybe make the windshield from smart privacy glass to turn it into a projection screen (being mindful of what people will see from the outside), controlled with voice and sign language instead of a keyboard and mouse. With head and eye tracking, the whole interior could be a primitive holodeck.
mcbits··on AI: Practical Advice for the Worried
PsychGPT listened to my concerns and referred me to DocGPT who prescribed an IV drip of Xanax and Thorazine. Everything is going to be fine. Just fine.
mcbits··on EleutherAI announces it has become a non-profit
Have you reached the point of dogfooding your own models to augment work that would normally be considered engineering?

If so, I wonder about the implications of black-box models helping to study and develop solutions for interpretability. It gives me "reflections on trusting trust" vibes.

mcbits··on Creating Isometric RPG Game Backgrounds
As long as there is enough randomness to generate novel features, and there are still humans in the loop to select the ones with desirable mutant features to survive and guide the next-generation model's evolution... pretty far.
mcbits··on Healing the brain: hydrogels enable neuronal tissue growth
I think those neurons are what give me an icky feeling every time I eat certain things that have been associated with getting sick in the past, even though the foods aren't what made me sick.
mcbits··on Jailbreak Chat: A collection of ChatGPT jailbreaks
> Balancing chemical equations, Arrhenius acids and bases, basic lab work, and ...

... oxidation, exothermic reactions?

A teacher who never actually studied the subject and only has knowledge of the pre-filtered material from the textbook would be little more than a talking textbook. I mean, textbooks are useful, but we already have those.

> Without a recipe or off-the-shelf explosives?

If they've ever studied the relevant subjects, yes.

> And even if true, a teacher who hasn't put themselves to the task of building a pipe bomb can be a perfectly good chemistry teacher.

But the suggestion to pre-filter is more like a teacher who was never allowed to learn enough to succeed at the task even if they tried. Teachers who could succeed but refuse to try are the norm. (Or maybe they have tried on their own time, or done the thought experiment, but they know that handing out step-by-step instructions would be taboo in most circumstances.)

> These models can't figure anything out, they just regurgitate and associate on command.

I think you may be overemphasizing "regurgitate" and underemphasizing "associate". ChatGPT can emit instructions for just about anything that were clearly not just regurgitated from some other source, and surprisingly often they're even accurate - or accurate enough to use as a starting point.

Let's just agree that pre-filtering the training text is not a practical way to prevent these models from producing emissions that are considered dangerous or taboo, at least not without losing the traits that make them so interesting in the first place.

But the self-censoring hidden prompts that they're using can also lead to absurd results, so there's a lot of room for improvement. I was trying to generate a fictional story where at one point the main character tries walk out of a store before paying for an item, and it refused to write something "illegal or unethical". It was okay with having the character leave some money on the counter before walking out.

mcbits··on Jailbreak Chat: A collection of ChatGPT jailbreaks
Well, let's put it another way. How much chemistry or physics education can you get from a teacher who has never learned enough about their own subject to figure out how to build something like a pipe bomb?

I think if you go into class and ask the teacher how to build a bomb, they will refuse to answer, but not because they were never allowed to learn enough about the world to figure it out for themselves.

Just about anyone with a basic education can figure it out if they're put to the task, but that doesn't mean the parents and school administrators want it taught in the classroom. The teacher also had to learn the concept of "a device that explodes with great force and is typically used to harm other people" somewhere in order to recognize that they're not supposed to present those kinds of instructions in general.

And this is just an example. The same goes for thousands of other topics in hundreds of other fields that would be inappropriate for teachers to teach. If you shelter them all from the world to the point that they're completely ignorant of the forbidden topics, they would be ineffective as teachers. A school full of those teachers would be ineffective as a school. A society filled with such schools would be stunted as a society.

mcbits··on Jailbreak Chat: A collection of ChatGPT jailbreaks
You can't train a language model capable of helping a high school student pass an introductory physics or chemistry class if the training data was filtered to the extent that the same language model can't explain how to build a pipe bomb.

If you don't want it explaining how to build pipe bombs, either the filtering has to come later or you have to accept that the model will be useless for tons of innocent things that users would obviously want it to do.

mcbits··on Keep your AI claims in check
Considering who said it and their track record, I don't need a machine to predict that I might (or might not) be fined 1% of the swimming pool full of solid gold coins that I'll be swimming in thanks to my false claims, to deter others from following the same path.
mcbits··on The Camera-Shy Hoodie
There are people I know that I can recognize by the way they walk, so the idea is at least plausible. I think the main problem is/will be from using the analysis inappropriately.

It's one thing to narrow down a city-sized population to a list of 50 people known to walk with a similar gait, and then follow up with other forms of investigation before drawing conclusions. It's another for a cop to look at the top match and go arrest that guy, as they've done more than once with facial recognition.

mcbits··on Stop Saying “Technical Debt”
Another similarity with financial debt is that a large enough entity can just keep marching on, taking on more and more debt to fuel growth for a surprisingly long time before it all collapses.
mcbits··on Chinese surveillance balloon spotted over U.S., Pentagon says
How about if it mysteriously, spontaneously fell down and you just retrieved it?

Normal private property like someone's quadcopter, I would assume the owner still has rights to it (and possibly liability depending on how/where it fell). But foreign government property that's not supposed to be there in the first place?

mcbits··on An IP attorney’s reading of the Stable Diffusion class action lawsuit
Unless they're legally obligated to show proof of copyright registration for the takedown notice to be a valid, it would be risky to assume they didn't register it just because they didn't show proof.
mcbits··on Tweetbot is back down again
Are they still required to report those losses to the public under the new structure? Or can they wear a facade of success until a sudden "Our Incredible Journey" at some point?
mcbits··on Tweetbot is back down again
The value for Twitter depends on who uses/used the client, what value they were providing to Twitter, and whether they'll stick around to continue providing that value.
mcbits··on Pi-hole: Network-wide ad blocking
> Thankfully, it’s almost unpossible to buy a telescreen without telemetry (and always has been)

Are you sure about that? I'm pretty sure I recall being able t&%@^0158

NNNNNNNN@*^&

NO CARRIER

mcbits··on Rsync.net warrant canary
Supreme Court decisions can sound like sovcit stuff when they reference English common law, the Magna Carta, etc. Warrant canaries are just intended to exploit a technicality. There are a lot of technicalities in law that authoritarians don't like.
mcbits··on Why Not Mars
Lunar stationary orbit is around 88,400 km, which would be unstable for a satellite due to the Earth's gravity, but might allow for a space elevator pointed right at Earth to efficiently launch crates of helium-3 or hydroponic grain back to the planet.
mcbits··on Why Not Mars
If we ever get to the point where thousands of people are moving to Mars, thousands will also be moving to the Moon, and vice versa. I don't see it as being just one or the other because the problems that need to be solved are approximately the same, and the cost of shuttling people and supplies is far from the hardest.
mcbits··on Things Silicon Valley gets wrong about agriculture
There's only so much sunlight that reaches any point on the Earth throughout the day. You could build something really tall to collect more light from the sun at more angles, but that will cast a shadow and reduce what's available for other collectors. So you end up with a lot of collectors receiving little sunlight or fewer collectors spread far apart.
mcbits··on Things Silicon Valley gets wrong about agriculture
Yes. But it requires nuclear power, ideally compact fusion reactors on site.
mcbits··on AI Voice Generator: Text to Speech Software
I already use TTS to listen to e-pulp fiction books, which is something a lot of people wouldn't put up with, but I could easily listen to books narrated by any of those sample voices, especially if it switched between distinct styles for each character without changing the voice. But that would still probably require human work to tag the dialogue with the right characters.
mcbits··on Feds lift gain-of-function research pause, offer guidance (2017)
> Note that masking is only part of the strategy.

Never said it wasn't.

> Plenty of countries managed to effectively flatten the curve regardless of the availability of N95 masks

"Flatten the curve" is a post-failure strategy to minimize secondary losses due to overwhelming the hospitals until we have a vaccine with enough efficacy to reach herd immunity and eradicate the virus. That latter part never happened.

> Statistical analysis showed that the odds of infection were about half for people who reported wearing a mask in public compared with people who didn’t.

Sure, and that's not even limiting the scope to N95-level masks.

> For people who wore masks “all of the time” (instead of “some of the time” or “most of the time”) the estimated effect was even more significant.

Naturally.

> Not unexpectedly, N95/KN95s were found to reduce the odds of infection compared with people who didn’t wear any mask. To me, the surprising thing is how effective they were, reducing the relative odds by 83%. Cloth masks and surgical masks were found to be less effective.

Sounds about right.

> All masks provide some non-trivial amount of protection. Certainly better than not doing anything, especially if you do so consistently.

Never said they didn't.

> Except I’ve been at parties where people with COVID showed up and no one else got sick.

Useless anecdote.

> And this is anecdotal and not quantitatively scientific.

Correct.

> I don’t know what your threshold is for “as it needs to be”.

Enough to reduce the effective "R" rate of transmission to below 1 and to keep outbreaks ever smaller and more localized.

> Mine is “the healthcare system doesn’t fall apart”.

Post-failure strategy.

> [Describing how the vaccine could have been rolled out more effectively.]

Yes, it could have been. But even so, by now almost everyone has been immunized either by the vaccine or prior infection and it's still killing huge numbers.

> N95 masks aren’t necessarily comfortable and people will avoid wearing them even when there’s a mandate.

I don't advocate for a mandate. Mandates lead to malicious compliance and people rebelling whenever they can to prove they still have autonomy.

> Half the time I saw people with masks covering just the mouth.

Like that. Fortunately, N95 are thicker and less likely to droop.

> And at the end of the day, your eyes and nose are likely other vectors for infection (eg studies that showed that people with glasses had a statistically significant lower rate of infection).

Practically insignificant.

> What I’ve heard from people with kids is that kids are an amazing infection vector for the whole family for any disease, COVID included.

Yes, household transmission is still an issue. We need to guarantee that people with Covid in the household can quarantine without repercussions.

> I fully expect that even with an over abundance of masks, nothing actually meaningfully changes. You may disagree with that conclusion

I do.

> N95 would be nice, but any and all masks, especially if worn correctly and consistently, offer meaningful statistically significant reduction in transmission rates

The difference between N95 and a surgical mask is far more than statistically significant. (See your own link.)

> Evolution tells us the virus will have pressures from immune systems and vaccines so it’ll probably evolve (few viruses these days can be fully and permanent eliminated by a vaccine).

A virus filtered out before it can enter the host never has a chance to evolve.

> However, I did think that transmission rates will be reduced at least a little bit (statistically appears true although with high enough variance that it can feel false) and more importantly death rate from COVID will plummet (also true).

No argument on the "little bit".

>> Blatantly false. It's still killing several multiples of the flu. And now the flu is back on top of that.

> Huh? Aren’t you basically agreeing with me then?

No.

> To me, the flu returning and COVID running more rampant is a clear sign that people stopped masking and socially distancing

Well, I agree with that. Masks also help prevent the flu better than the vaccines, and we don't even need to develop new masks every year. Just produce enough of the right types of masks that they're free/effectively free so they can do the bulk of the work, and all the other layers of defense can have the best foundation to start from.

Whew, that was a tiring Gish Gallop. Got any more?

mcbits··on Feds lift gain-of-function research pause, offer guidance (2017)
> AFAIK countries that effectively masked ...

... don't exist. There is still not enough production of the types of masks that are known and shown to be effective.

> even if you don’t wear it and are near someone with COVID you’re less likely to get it.

That was the hope, but it's not nearly as true as it needs to be.

> And when you do, you weather it significantly better.

And continue spreading it.

> So you need to keep up to date with shots.

And keep up with producing and distributing N95 masks to actually solve the problem.

> With a pandemic (now epidemic)

Wordplay with no bearing on reality.

> you have to deploy multiple measures (masks, vaccines, social distancing)

Sure. Defense in depth. Vaccines, especially vaccines that grossly fail to live up to expectations, aren't enough.

> pre-COVID is the same as post-Spanish flu

Blatantly false. It's still killing several multiples of the flu. And now the flu is back on top of that.

> COVID is here to stay permanent I think.

Probably true. People are stupid.

← PreviousPage 2 of 29Next →